CN215842230U - Air filtering device convenient for replacing filter cotton - Google Patents

Abstract

The utility model relates to an air filter equipment convenient to change filter pulp, it relates to an air filtration equipment, and it includes the casing, be equipped with the air intake on the casing, be equipped with the mounting groove with the air intake intercommunication in the casing, the mounting groove interpolation is equipped with filter pulp, be equipped with the air exhauster in the casing, the air exhauster is located one side that filter pulp kept away from the air intake, just be close to air exhauster one side on the casing and be equipped with the air outlet. This application has the filterable effect of filter pulp can be long-term effectual.

Description

Air filtering device convenient for replacing filter cotton

Technical Field

The application relates to an air filtering device, in particular to an air filtering device convenient for replacing filter cotton.

Background

The air filter is a device which collects dust from gas-solid two-phase flow through the action of a porous filter material and purifies the gas. The air with low dust content is purified and sent into the room to ensure the technological requirement of clean room and the air cleanliness in the common air-conditioning room.

Chinese patent No. CN204294044U discloses a reusable vehicle air filter with replaceable air filtering material, which comprises a main body frame, a metal upper cover and a metal lower cover, wherein the upper and lower parts of the main body frame are respectively provided with an upper accommodating groove and a lower accommodating groove, the upper accommodating groove is communicated with the lower accommodating groove through a plurality of arrayed grid-shaped through holes, an upper air filtering material is arranged in the upper accommodating groove of the main body frame, and a lower air filtering material is arranged in the lower accommodating groove of the main body frame; the metal upper cover and the metal lower cover are both in a grid shape, the metal upper cover and the metal lower cover are detachably arranged on the main body frame, the metal upper cover covers the upper air filtering material, and the metal lower cover covers the lower air filtering material; the utility model has the beneficial effects that: the diameters of the upper air filtering material and the lower air filtering material are different, so that air can be filtered sufficiently; can directly change air filter material, change process convenience very to can change different types of filter material according to actual conditions.

In view of the related art in the above, the inventors consider that there are drawbacks in that: when using this air cleaner, last air filter material in the filter filters the air with lower air filter material, but after long-term the use, it is full of the dust to go up easy on air filter material and the lower air filter material, need all dismantle the back with screw and screw this moment, dismantle back with metal upper cover and metal lower cover again, just can dismantle the change with last air filter material and lower air filter material, because bolt and screw rust easily, lead to the inconvenient dismantlement of screw and screw, lead to metal upper cover and metal lower cover difficult dismantlement.

SUMMERY OF THE UTILITY MODEL

In order to improve the inconvenient problem of dismantling of filter screen, the application provides an air filter convenient to change filter pulp.

The application provides a pair of air filter convenient to change filter pulp adopts following technical scheme:

the utility model provides an air filter equipment convenient to change filter pulp, includes the casing, be equipped with the air intake on the casing, be equipped with the mounting groove with the air intake intercommunication in the casing, the mounting groove interpolation is equipped with filter pulp, be equipped with the air exhauster in the casing, the air exhauster is located one side that filter pulp kept away from the air intake, just be equipped with the air outlet on one side of being close to the air exhauster on the casing.

Through adopting above-mentioned technical scheme, when using, the air exhauster filters outdoor wind along in the air intake suction casing, and the filter pulp filters, and the air that passes through the filtration is discharged from the air outlet department, and the filter pulp filters the back for a long time, will filter the cotton and take out from the mounting groove, installs new filter pulp in the mounting groove again, thereby filter pulp can be long-term effectual filtering.

Optionally, a sealing cover for covering the air outlet and the mounting groove is arranged on the shell, and a plurality of air holes communicated with the air outlet are formed in the sealing cover;

the sealing cover is hinged with the shell through a connecting piece and is fixed on the shell through a locking piece.

By adopting the technical scheme, the air outlet and the mounting groove are covered by the sealing cover, so that the possibility of mosquitoes entering the air outlet is favorably reduced; when the filter pulp needs to be changed, the locking piece is unlocked, the sealing cover is opened, and the filter pulp is removed from the mounting groove, so that the filter pulp can be conveniently and quickly changed.

Optionally, a groove is formed in the outer side wall of the shell, and convex edges are formed on the opposite side walls of the groove;

a connecting strip is arranged on one side, close to the shell, of the sealing cover, a connecting groove is arranged on one side, close to the shell, of the connecting strip, and connecting convex strips are arranged on opposite side walls of the connecting groove;

the connecting piece is including the mounting bar that inserts the recess, be equipped with the tight strip of support that stretches out the mounting groove on the mounting bar, support tight strip and protruding stupefied conflict setting, the one end that supports tight strip and stretch out the recess is equipped with the arc sheet rubber, the one side that supports tight strip is kept away from to the arc sheet rubber is equipped with the installation sand grip that inserts the spread groove, the installation sand grip is contradicted with the connection sand grip and is set up, one side that the arc sheet rubber was kept away from to the installation sand grip is equipped with the fixed strip that inserts the spread groove.

By adopting the technical scheme, when the sealing cover needs to be opened, the sealing cover is rotated to drive the arc-shaped rubber sheet to rotate, the arc-shaped rubber sheet is unfolded and fixed in the groove through the mounting strip, and the fixing strip is fixed in the connecting groove, so that the possibility that the mounting strip is separated from the groove after the sealing cover is turned over can be reduced; through the arc sheet rubber, for the closing cap rotates provides certain surplus, reduces the broken possibility of arc sheet rubber emergence.

Optionally, one side of the convex edge close to the groove opening of the groove is provided with a circular arc surface.

Through adopting above-mentioned technical scheme, utilize the arc surface and support tight strip contact, reduce the right-angle side fish tail of protruding stupefied and support the possibility of tight strip.

Optionally, a supporting strip is arranged on one side, close to the air holes, of the arc-shaped rubber sheet, and the supporting strip is in contact with the outer side wall of the connecting strip.

Through adopting above-mentioned technical scheme, when the closing cap seal shell, utilize the support bar to support the connecting strip, be favorable to reducing the possibility that the arc sheet rubber takes place to warp.

Optionally, the locking piece is including setting up the vertical retort on the casing lateral wall, one side that the casing was kept away from to the vertical retort is equipped with the locking stupefied, the arc sheet rubber one side setting is kept away from to the locking stupefied, form the locking groove between the locking stupefied and the casing, be equipped with the locking sand grip that inserts the locking groove on the closing cap.

Through adopting above-mentioned technical scheme, when the closing cap upset was closed, it is stupefied with locking sand grip extrusion locking, pressed the closing cap, go into locking sand grip card locking groove to this can convenient and fast install the closing cap on the casing, be favorable to reducing during the mosquito gets into the air outlet.

Optionally, a limiting groove is formed in the outer side wall of the shell and below the locking edge.

Through adopting above-mentioned technical scheme, when the locking sand grip inserts the locking groove, the locking sand grip inserts the spacing groove in, reduces the closing cap and breaks away from the possibility of locking groove, is favorable to increasing the installation stability of locking sand grip in the locking groove.

Optionally, the connecting piece includes the connecting block that sets up on the closing cap, be equipped with the connecting axle on the connecting block, the connecting axle sets up along the length direction of closing cap, be equipped with on the casing and supply connecting axle male installation piece, the connecting axle rotates with the installation piece to be connected.

Through adopting above-mentioned technical scheme, utilize the connecting axle to rotate with the installation piece and be connected, can convenient and fast like this overturn the closing cap.

Optionally, the locking member includes a rotating block hinged to the housing, a locking block is disposed on one side of the rotating block close to the cover, and the locking block is disposed on one side close to the mounting block;

a fixed block is arranged on one side, away from the connecting shaft, of the sealing cover, a rotating groove for the fixed block to be inserted in a turning mode is formed in one side, away from the sealing cover, of the fixed block, a fixed groove is formed in the fixed block and located below the rotating groove, a moving block is arranged in the rotating groove in a sliding mode, an inserting block is arranged on the moving block, one side, away from the moving block, of the inserting block penetrates through the fixed groove and is inserted into the rotating groove, and a positioning groove for the inserting block to be inserted is formed in one side, close to the shell, of the locking block;

the movable block is provided with a plurality of springs on one side far away from the insertion block, the side wall of the movable block is provided with a pressing block, one side far away from the movable block of the pressing block penetrates out of the fixed block, and the distance from the pressing block to the fixed block is larger than or equal to the distance from the locking block to the positioning groove.

Through adopting above-mentioned technical scheme, when needs are opened the closing cap, the extrusion is pressed the pressure piece, and the spring pressurized holds the power and moves down, drives the inserted block and moves down, and the inserted block breaks away from the constant head tank, rotates the turning block again, and the locking piece breaks away from the turning groove to this can convenient and fast untie the closing cap.

Optionally, an installation shaft is arranged on the side wall of the rotating block, a limiting block for the installation shaft to rotate and install is arranged on the shell, a torsion spring is arranged on the installation shaft, one end of the torsion spring is connected with the installation shaft, and the other end of the torsion spring is connected with the limiting block.

Through adopting above-mentioned technical scheme, press the briquetting when the extrusion, drive the inserted block and break away from the locking groove, the torsional spring resets, drives the turning block and rotates, and the turning block can break away from the rotation groove automatically like this, improves the convenience that the closing cap was opened.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the air filter is used, outdoor air is sucked into the shell along the air inlet by the exhaust fan, the filter cotton is filtered, the filtered air is discharged from the air outlet, after the filter cotton is filtered for a long time, the filter cotton is extracted from the mounting groove, and then new filter cotton is mounted in the mounting groove, so that the filter cotton can be effectively filtered for a long time;

2. when the sealing cover needs to be opened, the sealing cover is rotated to drive the arc-shaped rubber sheet to rotate, the arc-shaped rubber sheet is unfolded and fixed in the groove through the mounting strip, and the fixing strip is fixed in the connecting groove, so that the possibility that the mounting strip is separated from the groove after the sealing cover is turned over can be reduced; the arc-shaped rubber sheet provides a certain margin for the rotation of the sealing cover, so that the possibility of breakage of the arc-shaped rubber sheet is reduced;

3. when the sealing cover needs to be opened, the pressing block is extruded, the spring is pressed to accumulate force to move downwards, the inserting block is driven to move downwards, the inserting block is separated from the positioning groove, then the rotating block is rotated, and the locking block is separated from the rotating groove, so that the sealing cover can be conveniently and quickly unlocked.

Drawings

Fig. 1 is a schematic structural diagram of an air filter device for facilitating filter cotton replacement according to embodiment 1 of the present application.

Fig. 2 is a schematic structural diagram of a suction fan and a filter cotton in embodiment 1 of the application.

Fig. 3 is a schematic structural diagram of a side structure of an air filter device for facilitating filter cotton replacement according to embodiment 1 of the present application.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is an enlarged view of a portion B in fig. 3.

Fig. 6 is a schematic structural diagram of an air filter device for facilitating filter cotton replacement according to embodiment 2 of the present application.

Fig. 7 is a schematic structural view of a connector embodying embodiment 2.

Fig. 8 is a sectional view taken along line a-a in fig. 6.

Fig. 9 is an enlarged view of the portion C in fig. 8.

Fig. 10 is a schematic structural diagram showing a limiting block and a torsion spring in embodiment 2.

Description of reference numerals: 1. a housing; 10. a groove; 11. convex edges; 2. an air inlet; 3. mounting grooves; 4. filtering cotton; 40. lifting the pull belt; 5. an exhaust fan; 6. an air outlet; 7. sealing the cover; 70. air holes are formed; 71. a connecting strip; 72. connecting grooves; 73. connecting convex strips; 8. a connecting member; 80. mounting a bar; 81. a tightening strip; 82. an arc-shaped rubber sheet; 83. installing convex strips; 84. a fixing strip; 85. a circular arc surface; 86. a supporting strip; 87. connecting blocks; 88. a connecting shaft; 89. mounting blocks; 9. a locking member; 90. vertical bars; 91. a locking ridge; 92. a locking groove; 93. locking the convex strip; 94. a limiting groove; 95. rotating the block; 96. a locking block; 97. a fixed block; 98. a rotating groove; 99. fixing grooves; 900. a moving block; 901. inserting a block; 902. positioning a groove; 903. a spring; 904. a pressing block; 905. installing a shaft; 906. a limiting block; 907. a torsion spring; 908. a moving groove; 909. pulling a plate; 910. a transition arc surface; 911. extruding the cambered surface; 912. the bar is toggled.

Detailed Description

The present application is described in further detail below with reference to figures 1-10.

The embodiment of the application discloses air filter convenient to change filter pulp.

Example 1

Referring to fig. 1 and 2, an air filter device convenient for replacing filter cotton comprises a shell 1, wherein an air inlet 2 is arranged on the shell 1, the opening of the air inlet 2 faces outdoors, a mounting groove 3 communicated with the air inlet 2 is arranged in the shell 1, filter cotton 4 is inserted into the mounting groove 3, the filter cotton 4 is rectangular or circular, and the shape of the filter cotton 4 is not limited.

Referring to fig. 1 and 2, the filter cotton 4 is abutted against the wall of the mounting groove 3, a lifting belt 40 is arranged on the side wall of the filter cotton 4, and the lifting belt 40 extends out of the mounting groove 3; it is convenient to say that filter pulp 4 shifts out mounting groove 3.

Casing 1 is equipped with the cavity with 3 intercommunications of mounting groove, and the cavity can be with one, two, and is three to vary, and the cavity adopts threely in this embodiment, and the cavity internal fixation is equipped with air exhauster 5, and air exhauster 5 can adopt the bolt fastening on the lateral wall of cavity, and air exhauster 5 is located filter pulp 4 and keeps away from one side of air intake 2, is equipped with the air outlet 6 with the cavity intercommunication on casing 1.

Referring to fig. 1 and 2, a sealing cover 7 for covering an air outlet 6 and a mounting groove 3 is arranged on a shell 1, the sealing cover 7 and the shell 1 are both made of sectional materials or plastics, a plurality of air holes 70 communicated with the air outlet 6 are arranged on the sealing cover 7, the air holes 70 face indoors, the sealing cover 7 is hinged with the shell 1 through a connecting piece 8, and the sealing cover 7 is fixed on the shell 1 through a locking piece 9; when the filtering device is used, the exhaust fan 5 exhausts air, the air is sucked into the shell 1 from the air inlet 2, the filtering is carried out through the filter cotton 4, the air is discharged from the air outlet 6 and the air holes 70, the outdoor air can be filtered and then sent into the room, after the filter cotton 4 is used for a long time, the locking piece 9 is opened, the sealing cover 7 is opened through the connecting piece 8, the filter cotton 4 is exposed, the lifting belt 40 is pulled, the filter cotton 4 is moved out of the mounting groove 3, the new filter cotton 4 is installed in the mounting groove 3, the filter cotton 4 can be conveniently and quickly disassembled and installed, and the filter cotton 4 can be effectively filtered for a long time; the air outlet 6 and the filter cotton 4 are sealed by the sealing cover 7, so that the attractiveness of the filter device is improved.

Referring to fig. 3 and 4, a groove 10 is formed in one side of the outer side wall of the housing 1, which is close to the edge of the housing, convex edges 11 are formed on the opposite side walls of the groove 10, and the convex edges 11 and the housing 1 are integrally formed; one side of the convex edge 11 close to the notch of the groove 10 is provided with an arc surface 85.

Referring to fig. 4, a side of the cover 7 close to the housing 1 is provided with a connecting strip 71, the connecting strip 71 is also close to one side of an edge of the cover 7, one side of the connecting strip 71 close to the housing 1 is provided with a connecting groove 72, opposite side walls of the connecting groove 72 are provided with connecting convex strips 73, and the connecting strip 71 and the connecting convex strips 73 are integrally formed with the cover 7.

Referring to fig. 4, the connecting member 8 includes a mounting bar 80 inserted into the groove 10, the mounting bar 80 is provided with a tightening bar 81 extending out of the mounting groove 3, the tightening bar 81 and the mounting bar 80 are integrally formed and are T-shaped, the mounting bar 80 and the tightening bar 81 are made of rubber, and the tightening bar 81 is abutted against the convex edge 11; the arc surface 85 contacts the tightening strip 81, so that the possibility of breakage of the tightening strip 81 can be reduced.

Referring to fig. 4, an arc-shaped rubber sheet 82 is arranged at one end of the abutting strip 81 extending out of the groove 10, a support strip 86 is arranged at one side of the arc-shaped rubber sheet 82 close to the air vent 70, and the support strip 86 is in contact with the outer side wall of the connecting strip 71; when the cover 7 is covered on the housing 1, the arc-shaped rubber sheet 82 is bent, and the supporting strips 86 increase the strength of the arc-shaped rubber sheet 82 and reduce the possibility of deformation of the arc-shaped rubber sheet 82.

Referring to fig. 4, one side that the arc rubber piece 82 kept away from the strip 81 that supports is equipped with the installation sand grip 83 of inserting the spread groove 72, installation sand grip 83 contradicts with connection sand grip 73 and sets up, one side that the arc rubber piece 82 was kept away from to installation sand grip 83 is equipped with the fixed strip 84 of inserting the spread groove 72, fixed strip 84 just is the T type with installation sand grip 83 integrated into one piece, installation sand grip 83, arc rubber piece 82 and support strip 81 integrated into one piece, installation sand grip 83 and fixed strip 84 adopt rubber material to make.

Referring to fig. 4 and 5, the locking member 9 includes a vertical bar 90 disposed on the outer side wall of the housing 1, the vertical bar 90 and the housing 1 are integrally formed, the vertical bar 90 is located below the sealing cover 7, a locking ridge 91 is disposed on one side of the vertical bar 90 away from the housing 1, an excessive arc surface 910 is disposed on one side of the locking ridge 91 away from the vertical bar 90, the locking ridge 91 is disposed on one side away from the arc rubber sheet 82, a locking groove 92 is formed between the locking ridge 91 and the housing 1, a limiting groove 94 is disposed on the outer side wall of the housing 1 and below the locking ridge 91, a locking protrusion 93 inserted into the locking groove 92 and the limiting groove 94 is disposed on one side of the sealing cover 7 away from the arc rubber sheet 82, and an extrusion arc surface 911 is disposed on one side of the locking protrusion 93 away from the sealing cover 7; when the locking protrusion 93 is inserted into the locking groove 92, it is simultaneously inserted into the stopper groove 94, whereby the possibility that the locking protrusion 93 is disengaged from the locking groove 92 can be reduced.

Referring to fig. 4 and 5, a toggle bar 912 is disposed on the outer side wall of the cover 7, and the toggle bar 912 is located above the locking convex strip 93; when filter pulp 4 is changed to needs, at first upwards stimulate stir strip 912, the closing cap 7 slightly warp, extrusion cambered surface 911 slides on excessive cambered surface 910, thereby locking sand grip 93 breaks away from locking groove 92, arc sheet rubber 82 is along with the upset of closing cap 7 expandes, can convenient and fast open closing cap 7, shift out filter pulp 4 from mounting groove 3 again, insert new filter pulp 4 in mounting groove 3, upset closing cap 7 again, locking sand grip 93 extrudes locking stupefied 91, closing cap 7 slightly warp, insert locking sand grip 93 in locking groove 92, can convenient and fast install closing cap 7 on casing 1.

The implementation principle of the embodiment 1 is as follows: through air exhauster 5 with wind along 2 suction mounting grooves 3 of air intake, filter the cotton 4 simultaneously and filter wind, export from air outlet 6 at last, when needs change filter the cotton 4, will filter the cotton 4 and take out from mounting groove 3, install new filter the cotton 4 in mounting groove 3 again to this can convenient and fast's change filter the cotton 4.

Example 2

Referring to fig. 6 and 7, the present embodiment is different from embodiment 1 in that the connection member 8 includes a connection block 87 fixedly disposed on the cover 7, the connection block 87 is integrally formed with the cover 7, a connection shaft 88 is fixedly disposed on the connection block 87, the connection shaft 88 is disposed along the length direction of the cover 7, a mounting block 89 for inserting the connection shaft 88 is fixedly disposed on the housing 1, the connection shaft 88 is rotatably connected to the mounting block 89, and the mounting block 89 is disposed at the edge of the housing 1.

Referring to fig. 8 and 9, the locking member 9 includes a rotation block 95, and the rotation block 95 is disposed near an edge of the housing 1 and opposite to the mounting block 89.

Referring to fig. 9 and 10, a mounting shaft 905 is disposed on a side wall of the rotating block 95, a limiting block 906 for rotatably mounting the mounting shaft 905 is disposed on the housing 1, a torsion spring 907 is disposed on the mounting shaft 905, one end of the torsion spring 907 is connected to the mounting shaft 905, and the other end of the torsion spring 907 is connected to the limiting block 906.

Referring to fig. 9, a locking block 96 is provided on a side of the rotating block 95 adjacent to the cover 7, and the locking block 96 is provided on a side adjacent to the mounting block 89.

Referring to fig. 9, a fixing block 97 is arranged at the edge of the sealing cover 7, the fixing block 96 is arranged opposite to the connecting shaft 88, a rotating groove 98 for enabling the fixing block 97 to be turned over and inserted is formed in one side, away from the sealing cover 7, of the fixing block 97, a fixing groove 99 is formed in the fixing block 97, the fixing groove 99 is located below the rotating groove 98, a moving block 900 is arranged in the rotating groove 98 in a sliding mode, an inserting block 901 is arranged on the moving block 900, one side, away from the moving block 900, of the inserting block 901 penetrates out of the fixing groove 99 and is inserted into the rotating groove 98, and a positioning groove 902 for enabling the inserting block 901 to be inserted is formed in one side, close to the shell 1, of the locking block 96.

Referring to fig. 9, a plurality of springs 903 are disposed on one side of the moving block 900 away from the insertion block 901, a pressing block 904 is disposed on a side wall of the moving block 900, a moving groove 908 communicated with the fixing groove 99 is disposed on a side wall of the fixing block 97, one side of the pressing block 904 away from the moving block 900 penetrates through the moving groove 908, a distance that the pressing block 904 extends out of the moving groove 908 is greater than or equal to a distance that the locking block 96 is inserted into the positioning groove 902, a pull plate 909 is disposed at one end of the pressing block 904 penetrating through the moving groove 908, and the pull plate 909 is disposed on one side close to the rotating block 95.

The implementation principle of the embodiment 2 is as follows: when the filter cotton 4 needs to be replaced, the pressing block 904 is squeezed, the spring 903 is pressed to accumulate force and deform, the fixing block 97 drives the inserting block 901 to move downwards, the inserting block 901 is separated from the positioning groove 902, the torsion spring 907 resets to drive the fixing block 97 to be separated from the rotating groove 98, then the pulling plate 909 is pulled, and the connecting shaft 88 rotates in the mounting block 89, so that the sealing cover 7 can be driven to rotate, the mounting groove 3 can be exposed, and the filter cotton 4 is convenient to replace.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides an air filter equipment convenient to change filter pulp which characterized in that: including casing (1), be equipped with air intake (2) on casing (1), be equipped with mounting groove (3) with air intake (2) intercommunication in casing (1), mounting groove (3) interpolation is equipped with filter pulp (4), be equipped with air exhauster (5) in casing (1), one side that air intake (2) were kept away from in filter pulp (4) is located in air exhauster (5), just be close to air exhauster (5) one side and be equipped with air outlet (6) on casing (1).

2. An air filtration device with easy filter cotton replacement as claimed in claim 1 wherein: a sealing cover (7) used for covering the air outlet (6) and the mounting groove (3) is arranged on the shell (1), and a plurality of air holes (70) communicated with the air outlet (6) are formed in the sealing cover (7);

the sealing cover (7) is hinged with the shell (1) through a connecting piece (8), and the sealing cover (7) is fixed on the shell (1) through a locking piece (9).

3. An air filtration device with easy filter cotton replacement as claimed in claim 2 wherein: a groove (10) is formed in the outer side wall of the shell (1), and convex edges (11) are formed in the opposite side walls of the groove (10);

a connecting strip (71) is arranged on one side, close to the shell (1), of the sealing cover (7), a connecting groove (72) is arranged on one side, close to the shell (1), of the connecting strip (71), and connecting convex strips (73) are arranged on opposite side walls of the connecting groove (72);

connecting piece (8) are including installing strip (80) that inserts recess (10), be equipped with on installing strip (80) and stretch out supporting of mounting groove (3) strip (81), support supporting strip (81) and protruding stupefied (11) conflict setting, the one end that supports supporting strip (81) and stretch out recess (10) is equipped with arc sheet rubber (82), one side that supports supporting strip (81) is kept away from in arc sheet rubber (82) is equipped with installation sand grip (83) of inserting spread groove (72), installation sand grip (83) are contradicted with connection sand grip (73) and are set up, one side that arc sheet rubber (82) were kept away from in installation sand grip (83) is equipped with fixed strip (84) of inserting spread groove (72).

4. An air filtration device with easy filter cotton replacement as claimed in claim 3 wherein: and one side of the convex edge (11) close to the notch of the groove (10) is provided with an arc surface (85).

5. An air filtration device with easy filter cotton replacement as claimed in claim 3 wherein: one side of the arc-shaped rubber sheet (82) close to the air holes (70) is provided with a support strip (86), and the support strip (86) is in contact with the outer side wall of the connecting strip (71).

6. An air filtration device with easy filter cotton replacement as claimed in claim 2 wherein: locking piece (9) are including setting up vertical retort (90) on casing (1) lateral wall, one side that casing (1) were kept away from in vertical retort (90) is equipped with the stupefied (91) of locking, the stupefied (91) of locking sets up in one side of keeping away from arc sheet rubber (82), form between locking stupefied (91) and casing (1) and lock groove (92), be equipped with on closing cap (7) and insert locking convex strip (93) that lock groove (92) was locked.

7. An air filtration device with easy filter cotton replacement as claimed in claim 6 wherein: and a limiting groove (94) is arranged on the outer side wall of the shell (1) and is positioned below the locking edge (91).

8. An air filtration device with easy filter cotton replacement as claimed in claim 2 wherein: connecting piece (8) are including setting up connecting block (87) on closing cap (7), be equipped with connecting axle (88) on connecting block (87), the length direction setting of closing cap (7) is followed in connecting axle (88), be equipped with on casing (1) and supply connecting axle (88) male installation piece (89), connecting axle (88) rotate with installation piece (89) and be connected.

9. An air filtration device with easy filter cotton replacement as claimed in claim 2 wherein: the locking piece (9) comprises a rotating block (95) hinged to the shell (1), a locking block (96) is arranged on one side, close to the sealing cover (7), of the rotating block (95), and the locking block (96) is arranged on one side, close to the mounting block (89);

a fixing block (97) is arranged on one side, away from the connecting shaft (88), of the sealing cover (7), a rotating groove (98) for the fixing block (97) to be inserted in an overturning manner is formed in one side, away from the sealing cover (7), of the fixing block (97), a fixing groove (99) is formed in the fixing block (97), the fixing groove (99) is located below the rotating groove (98), a moving block (900) is arranged in the rotating groove (98) in a sliding manner, an inserting block (901) is arranged on the moving block (900), one side, away from the moving block (900), of the inserting block (901) penetrates through the fixing groove (99) and is inserted into the rotating groove (98), and a positioning groove (902) for the inserting block (901) is formed in one side, close to the shell (1), of the locking block (96);

a plurality of springs (903) are arranged on one side, away from the inserting block (901), of the moving block (900), a pressing block (904) is arranged on the side wall of the moving block (900), one side, away from the moving block (900), of the pressing block (904) penetrates through the fixing block (97), and the distance of the pressing block (904) extending out of the fixing block (97) is larger than or equal to the distance of the locking block (96) inserted into the positioning groove (902).

10. An air filtration device with easy filter cotton replacement as claimed in claim 9 wherein: the side wall of the rotating block (95) is provided with an installation shaft (905), the shell (1) is provided with a limiting block (906) for the installation shaft (905) to rotate and install, the installation shaft (905) is provided with a torsion spring (907), one end of the torsion spring (907) is connected with the installation shaft (905), and the other end of the torsion spring (907) is connected with the limiting block (906).

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